SUS316L 50-120KG/Second-rate Industrial Vertical Fluidized Bed Dryer In Pharmaceutical Industry

Working principle
Used the draught of fan, natural air flows through purifying cabinet, heater and froms high speed air flow in the hole of material bed, which makes the material into boiling(fluidized)status, during the large area touch between gas and solid phases, mosture of material is veaporated quickly, and thus reaching the purpose of drying.

Main feature
Hopper is sealed with frame by way of O type air cell, featuring convenient handling. Hopper is equipped with agitator inside, materail is dried uniformly and speedily without boiling dead angle.
Filter bag and cylinder automatic bag shake unit are supplied on the top to avoid materialloss.
With air purifying cabinet, it usesoutdoor air has no influence on air purifying load of purified workshop.
High drying speed, drying time can be freely set up according to features of materials, normally at 10-30min.

The temperature during the fluided boiling drying process usually changes in three stages: in the first stage, the temperature of the material to be dried is gradually heated from room temperature to the wet bulb temperature of the hot air; in the second stage, the dried material keeps the hot air wet. The temperature of the ball is constant until the moisture content in the material to be dried is reduced to the critical humidity. At this time, there is no more free water in the material to be dried; then, the temperature rises to the third stage, and the dried material loses the bond between the particles. Moisture.

Operating speed: In order for the particulate solid material to operate under a high efficiency boiling dryer, the operating speed must be above the critical fluidization velocity and below the take-up speed.

Critical drying speed: When the fluid in the dryer reaches the drying point, that is, the bed pressure loss is equal to the mass of solid particles per unit area of ​​the bed, the drying speed at this time is called the critical drying speed (also known as the initial drying speed). Or the minimum drying speed), which is the lowest speed of the drying operation.

Take-out speed: The take-off speed of the material to be dried is numerically equal to the settling speed of the material to be dried. When the gas exceeds this speed, the material will be taken out of the drying chamber.